/*
 *  Copyright 2008 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.mybatis.generator.codegen.ibatis2.sqlmap.elements;

import static org.mybatis.generator.internal.util.StringUtility.stringHasValue;

import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.dom.xml.Attribute;
import org.mybatis.generator.api.dom.xml.TextElement;
import org.mybatis.generator.api.dom.xml.XmlElement;

/**
 * 
 * @author Jeff Butler
 * 
 */
public class ExampleWhereClauseElementGenerator extends AbstractXmlElementGenerator {

	public ExampleWhereClauseElementGenerator() {
		super();
	}

	@Override
	public void addElements(XmlElement parentElement) {
		XmlElement answer = new XmlElement("sql"); //$NON-NLS-1$

		answer.addAttribute(new Attribute("id", introspectedTable.getExampleWhereClauseId())); //$NON-NLS-1$

		context.getCommentGenerator().addComment(answer);

		XmlElement outerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		outerIterateElement.addAttribute(new Attribute("property", "oredCriteria")); //$NON-NLS-1$ //$NON-NLS-2$
		outerIterateElement.addAttribute(new Attribute("conjunction", "or")); //$NON-NLS-1$ //$NON-NLS-2$
		outerIterateElement.addAttribute(new Attribute("prepend", "where")); //$NON-NLS-1$ //$NON-NLS-2$
		outerIterateElement.addAttribute(new Attribute("removeFirstPrepend", "iterate")); //$NON-NLS-1$ //$NON-NLS-2$
		answer.addElement(outerIterateElement);

		XmlElement isEqualElement = new XmlElement("isEqual"); //$NON-NLS-1$
		isEqualElement.addAttribute(new Attribute("property", "oredCriteria[].valid")); //$NON-NLS-1$ //$NON-NLS-2$
		isEqualElement.addAttribute(new Attribute("compareValue", "true")); //$NON-NLS-1$ //$NON-NLS-2$
		outerIterateElement.addElement(isEqualElement);

		isEqualElement.addElement(new TextElement("(")); //$NON-NLS-1$

		XmlElement innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("property", "oredCriteria[].criteriaWithoutValue")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addElement(new TextElement("$oredCriteria[].criteriaWithoutValue[]$")); //$NON-NLS-1$
		isEqualElement.addElement(innerIterateElement);

		innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("property", "oredCriteria[].criteriaWithSingleValue")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement
				.addElement(new TextElement(
						"$oredCriteria[].criteriaWithSingleValue[].condition$ #oredCriteria[].criteriaWithSingleValue[].value#")); //$NON-NLS-1$
		isEqualElement.addElement(innerIterateElement);

		innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("property", "oredCriteria[].criteriaWithListValue")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addElement(new TextElement("$oredCriteria[].criteriaWithListValue[].condition$")); //$NON-NLS-1$
		XmlElement innerInnerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		innerInnerIterateElement.addAttribute(new Attribute("property", //$NON-NLS-1$
				"oredCriteria[].criteriaWithListValue[].values")); //$NON-NLS-1$
		innerInnerIterateElement.addAttribute(new Attribute("open", "(")); //$NON-NLS-1$ //$NON-NLS-2$
		innerInnerIterateElement.addAttribute(new Attribute("close", ")")); //$NON-NLS-1$ //$NON-NLS-2$
		innerInnerIterateElement.addAttribute(new Attribute("conjunction", ",")); //$NON-NLS-1$ //$NON-NLS-2$
		innerInnerIterateElement.addElement(new TextElement("#oredCriteria[].criteriaWithListValue[].values[]#")); //$NON-NLS-1$
		innerIterateElement.addElement(innerInnerIterateElement);
		isEqualElement.addElement(innerIterateElement);

		innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
		innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("property", "oredCriteria[].criteriaWithBetweenValue")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$
		innerIterateElement.addElement(new TextElement("$oredCriteria[].criteriaWithBetweenValue[].condition$")); //$NON-NLS-1$
		innerIterateElement.addElement(new TextElement("#oredCriteria[].criteriaWithBetweenValue[].values[0]# and")); //$NON-NLS-1$
		innerIterateElement.addElement(new TextElement("#oredCriteria[].criteriaWithBetweenValue[].values[1]#")); //$NON-NLS-1$
		isEqualElement.addElement(innerIterateElement);

		// if any of the columns have a user defined type handler, then we need
		// to add additional inner iterate elements that specify the type
		// handler
		for (IntrospectedColumn introspectedColumn : introspectedTable.getNonBLOBColumns()) {
			if (stringHasValue(introspectedColumn.getTypeHandler())) {
				// name the property based on the column name, then
				// add the type handler to the parameter declaration
				StringBuilder sb1 = new StringBuilder();
				StringBuilder sb2 = new StringBuilder();
				innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$

				sb1.append("oredCriteria[]."); //$NON-NLS-1$
				sb1.append(introspectedColumn.getJavaProperty());
				sb1.append("CriteriaWithSingleValue"); //$NON-NLS-1$

				innerIterateElement.addAttribute(new Attribute("property", sb1.toString())); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$

				sb2.append(sb1);

				sb1.insert(0, '$');
				sb1.append("[].condition$ ");//$NON-NLS-1$

				sb2.insert(0, '#');
				sb2.append("[].value,handler=");//$NON-NLS-1$
				sb2.append(introspectedColumn.getTypeHandler());
				sb2.append('#');

				sb1.append(sb2);

				innerIterateElement.addElement(new TextElement(sb1.toString()));
				isEqualElement.addElement(innerIterateElement);

				sb1.setLength(0);
				sb2.setLength(0);
				sb1.append("oredCriteria[]."); //$NON-NLS-1$
				sb1.append(introspectedColumn.getJavaProperty());
				sb1.append("CriteriaWithListValue"); //$NON-NLS-1$

				innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
				innerIterateElement.addAttribute(new Attribute("property", sb1.toString())); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$

				sb2.append('$');
				sb2.append(sb1);
				sb2.append("[].condition$"); //$NON-NLS-1$

				innerIterateElement.addElement(new TextElement(sb2.toString()));

				sb2.setLength(0);
				sb2.append(sb1);
				sb2.append("[].values"); //$NON-NLS-1$

				innerInnerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
				innerInnerIterateElement.addAttribute(new Attribute("property", //$NON-NLS-1$
						sb2.toString()));
				innerInnerIterateElement.addAttribute(new Attribute("open", "(")); //$NON-NLS-1$ //$NON-NLS-2$
				innerInnerIterateElement.addAttribute(new Attribute("close", ")")); //$NON-NLS-1$ //$NON-NLS-2$
				innerInnerIterateElement.addAttribute(new Attribute("conjunction", ",")); //$NON-NLS-1$ //$NON-NLS-2$

				sb2.setLength(0);
				sb2.append('#');
				sb2.append(sb1);
				sb2.append("[].values[],handler="); //$NON-NLS-1$
				sb2.append(introspectedColumn.getTypeHandler());
				sb2.append('#');

				innerInnerIterateElement.addElement(new TextElement(sb2.toString()));
				innerIterateElement.addElement(innerInnerIterateElement);
				isEqualElement.addElement(innerIterateElement);

				sb1.setLength(0);
				sb2.setLength(0);
				sb1.append("oredCriteria[]."); //$NON-NLS-1$
				sb1.append(introspectedColumn.getJavaProperty());
				sb1.append("CriteriaWithBetweenValue"); //$NON-NLS-1$

				innerIterateElement = new XmlElement("iterate"); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("prepend", "and")); //$NON-NLS-1$ //$NON-NLS-2$
				innerIterateElement.addAttribute(new Attribute("property", sb1.toString())); //$NON-NLS-1$
				innerIterateElement.addAttribute(new Attribute("conjunction", "and")); //$NON-NLS-1$ //$NON-NLS-2$

				sb2.append('$');
				sb2.append(sb1);
				sb2.append("[].condition$"); //$NON-NLS-1$

				innerIterateElement.addElement(new TextElement(sb2.toString()));

				sb2.setLength(0);
				sb2.append(sb1);

				sb1.insert(0, '#');
				sb1.append("[].values[0],handler="); //$NON-NLS-1$
				sb1.append(introspectedColumn.getTypeHandler());
				sb1.append("# and"); //$NON-NLS-1$

				sb2.insert(0, '#');
				sb2.append("[].values[1],handler="); //$NON-NLS-1$
				sb2.append(introspectedColumn.getTypeHandler());
				sb2.append('#');

				innerIterateElement.addElement(new TextElement(sb1.toString()));
				innerIterateElement.addElement(new TextElement(sb2.toString()));
				isEqualElement.addElement(innerIterateElement);
			}
		}

		isEqualElement.addElement(new TextElement(")")); //$NON-NLS-1$

		if (context.getPlugins().sqlMapExampleWhereClauseElementGenerated(answer, introspectedTable)) {
			parentElement.addElement(answer);
		}
	}
}
